Make TR1 special function tests support C++98

	* testsuite/tr1/5_numerical_facilities/special_functions/
	08_cyl_bessel_i/check_value.cc: Use __attribute__((unused)) instead
	of [[gnu::unused]].
	* testsuite/tr1/5_numerical_facilities/special_functions/
	09_cyl_bessel_j/check_value.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	10_cyl_bessel_k/check_value.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	11_cyl_neumann/check_value.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	21_sph_bessel/check_value.cc: Likewise.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	23_sph_neumann/check_value.cc: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@238985 138bc75d-0d04-0410-961f-82ee72b054a4

7 files changed, 130 insertions, 114 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 567dcc13c7c..e6d43257e94 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,19 @@
+2016-08-02  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/tr1/5_numerical_facilities/special_functions/
+	08_cyl_bessel_i/check_value.cc: Use __attribute__((unused)) instead
+	of [[gnu::unused]].
+	* testsuite/tr1/5_numerical_facilities/special_functions/
+	09_cyl_bessel_j/check_value.cc: Likewise.
+	* testsuite/tr1/5_numerical_facilities/special_functions/
+	10_cyl_bessel_k/check_value.cc: Likewise.
+	* testsuite/tr1/5_numerical_facilities/special_functions/
+	11_cyl_neumann/check_value.cc: Likewise.
+	* testsuite/tr1/5_numerical_facilities/special_functions/
+	21_sph_bessel/check_value.cc: Likewise.
+	* testsuite/tr1/5_numerical_facilities/special_functions/
+	23_sph_neumann/check_value.cc: Likewise.
+
 2016-08-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* config/abi/post/solaris2.10/baseline_symbols.txt: Regenerate.
diff --git a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/08_cyl_bessel_i/check_value.cc b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/08_cyl_bessel_i/check_value.cc
index 93315606cdb..78028bbdf07 100644
--- a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/08_cyl_bessel_i/check_value.cc
+++ b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/08_cyl_bessel_i/check_value.cc
@@ -69,7 +69,7 @@ template<typename Tp>
   void
   test001()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -123,7 +123,7 @@ template<typename Tp>
   void
   test002()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -177,7 +177,7 @@ template<typename Tp>
   void
   test003()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -231,7 +231,7 @@ template<typename Tp>
   void
   test004()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -285,7 +285,7 @@ template<typename Tp>
   void
   test005()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -339,7 +339,7 @@ template<typename Tp>
   void
   test006()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -393,7 +393,7 @@ template<typename Tp>
   void
   test007()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -447,7 +447,7 @@ template<typename Tp>
   void
   test008()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -501,7 +501,7 @@ template<typename Tp>
   void
   test009()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -556,7 +556,7 @@ template<typename Tp>
   void
   test010()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -610,7 +610,7 @@ template<typename Tp>
   void
   test011()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -664,7 +664,7 @@ template<typename Tp>
   void
   test012()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -718,7 +718,7 @@ template<typename Tp>
   void
   test013()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -772,7 +772,7 @@ template<typename Tp>
   void
   test014()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -826,7 +826,7 @@ template<typename Tp>
   void
   test015()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -880,7 +880,7 @@ template<typename Tp>
   void
   test016()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -934,7 +934,7 @@ template<typename Tp>
   void
   test017()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -988,7 +988,7 @@ template<typename Tp>
   void
   test018()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1042,7 +1042,7 @@ template<typename Tp>
   void
   test019()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1096,7 +1096,7 @@ template<typename Tp>
   void
   test020()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
diff --git a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/09_cyl_bessel_j/check_value.cc b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/09_cyl_bessel_j/check_value.cc
index 49dc3edf9a7..d7cc1c63f1c 100644
--- a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/09_cyl_bessel_j/check_value.cc
+++ b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/09_cyl_bessel_j/check_value.cc
@@ -69,7 +69,7 @@ template<typename Tp>
   void
   test001()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -123,7 +123,7 @@ template<typename Tp>
   void
   test002()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -177,7 +177,7 @@ template<typename Tp>
   void
   test003()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -231,7 +231,7 @@ template<typename Tp>
   void
   test004()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -285,7 +285,7 @@ template<typename Tp>
   void
   test005()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -339,7 +339,7 @@ template<typename Tp>
   void
   test006()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -393,7 +393,7 @@ template<typename Tp>
   void
   test007()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -447,7 +447,7 @@ template<typename Tp>
   void
   test008()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -501,7 +501,7 @@ template<typename Tp>
   void
   test009()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -556,7 +556,7 @@ template<typename Tp>
   void
   test010()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -610,7 +610,7 @@ template<typename Tp>
   void
   test011()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -664,7 +664,7 @@ template<typename Tp>
   void
   test012()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -718,7 +718,7 @@ template<typename Tp>
   void
   test013()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -772,7 +772,7 @@ template<typename Tp>
   void
   test014()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -826,7 +826,7 @@ template<typename Tp>
   void
   test015()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -880,7 +880,7 @@ template<typename Tp>
   void
   test016()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -934,7 +934,7 @@ template<typename Tp>
   void
   test017()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -988,7 +988,7 @@ template<typename Tp>
   void
   test018()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1042,7 +1042,7 @@ template<typename Tp>
   void
   test019()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1096,7 +1096,7 @@ template<typename Tp>
   void
   test020()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
diff --git a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/10_cyl_bessel_k/check_value.cc b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/10_cyl_bessel_k/check_value.cc
index 038aa2b2f95..d664d1eaf06 100644
--- a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/10_cyl_bessel_k/check_value.cc
+++ b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/10_cyl_bessel_k/check_value.cc
@@ -68,7 +68,7 @@ template<typename Tp>
   void
   test001()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -121,7 +121,7 @@ template<typename Tp>
   void
   test002()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -174,7 +174,7 @@ template<typename Tp>
   void
   test003()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -227,7 +227,7 @@ template<typename Tp>
   void
   test004()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -280,7 +280,7 @@ template<typename Tp>
   void
   test005()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -333,7 +333,7 @@ template<typename Tp>
   void
   test006()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -386,7 +386,7 @@ template<typename Tp>
   void
   test007()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -439,7 +439,7 @@ template<typename Tp>
   void
   test008()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -492,7 +492,7 @@ template<typename Tp>
   void
   test009()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -545,7 +545,7 @@ template<typename Tp>
   void
   test010()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -598,7 +598,7 @@ template<typename Tp>
   void
   test011()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -652,7 +652,7 @@ template<typename Tp>
   void
   test012()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -705,7 +705,7 @@ template<typename Tp>
   void
   test013()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -758,7 +758,7 @@ template<typename Tp>
   void
   test014()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -811,7 +811,7 @@ template<typename Tp>
   void
   test015()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -864,7 +864,7 @@ template<typename Tp>
   void
   test016()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -917,7 +917,7 @@ template<typename Tp>
   void
   test017()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -970,7 +970,7 @@ template<typename Tp>
   void
   test018()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1023,7 +1023,7 @@ template<typename Tp>
   void
   test019()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1076,7 +1076,7 @@ template<typename Tp>
   void
   test020()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1129,7 +1129,7 @@ template<typename Tp>
   void
   test021()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1182,7 +1182,7 @@ template<typename Tp>
   void
   test022()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
diff --git a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/11_cyl_neumann/check_value.cc b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/11_cyl_neumann/check_value.cc
index 187bd02312a..f6262d0d399 100644
--- a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/11_cyl_neumann/check_value.cc
+++ b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/11_cyl_neumann/check_value.cc
@@ -68,7 +68,7 @@ template<typename Tp>
   void
   test001()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -121,7 +121,7 @@ template<typename Tp>
   void
   test002()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -174,7 +174,7 @@ template<typename Tp>
   void
   test003()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -227,7 +227,7 @@ template<typename Tp>
   void
   test004()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -273,7 +273,7 @@ template<typename Tp>
   void
   test005()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -326,7 +326,7 @@ template<typename Tp>
   void
   test006()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -372,7 +372,7 @@ template<typename Tp>
   void
   test007()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -425,7 +425,7 @@ template<typename Tp>
   void
   test008()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -478,7 +478,7 @@ template<typename Tp>
   void
   test009()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -531,7 +531,7 @@ template<typename Tp>
   void
   test010()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -584,7 +584,7 @@ template<typename Tp>
   void
   test011()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -638,7 +638,7 @@ template<typename Tp>
   void
   test012()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -691,7 +691,7 @@ template<typename Tp>
   void
   test013()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -744,7 +744,7 @@ template<typename Tp>
   void
   test014()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -797,7 +797,7 @@ template<typename Tp>
   void
   test015()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -850,7 +850,7 @@ template<typename Tp>
   void
   test016()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -903,7 +903,7 @@ template<typename Tp>
   void
   test017()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -956,7 +956,7 @@ template<typename Tp>
   void
   test018()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1009,7 +1009,7 @@ template<typename Tp>
   void
   test019()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1062,7 +1062,7 @@ template<typename Tp>
   void
   test020()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1115,7 +1115,7 @@ template<typename Tp>
   void
   test021()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -1168,7 +1168,7 @@ template<typename Tp>
   void
   test022()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
diff --git a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/21_sph_bessel/check_value.cc b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/21_sph_bessel/check_value.cc
index b62dc051a52..d4f32814ecf 100644
--- a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/21_sph_bessel/check_value.cc
+++ b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/21_sph_bessel/check_value.cc
@@ -69,7 +69,7 @@ template<typename Tp>
   void
   test001()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -123,7 +123,7 @@ template<typename Tp>
   void
   test002()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -177,7 +177,7 @@ template<typename Tp>
   void
   test003()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -231,7 +231,7 @@ template<typename Tp>
   void
   test004()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -285,7 +285,7 @@ template<typename Tp>
   void
   test005()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -339,7 +339,7 @@ template<typename Tp>
   void
   test006()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -394,7 +394,7 @@ template<typename Tp>
   void
   test007()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -448,7 +448,7 @@ template<typename Tp>
   void
   test008()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -502,7 +502,7 @@ template<typename Tp>
   void
   test009()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -556,7 +556,7 @@ template<typename Tp>
   void
   test010()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -610,7 +610,7 @@ template<typename Tp>
   void
   test011()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -664,7 +664,7 @@ template<typename Tp>
   void
   test012()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -718,7 +718,7 @@ template<typename Tp>
   void
   test013()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -772,7 +772,7 @@ template<typename Tp>
   void
   test014()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
diff --git a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/23_sph_neumann/check_value.cc b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/23_sph_neumann/check_value.cc
index 396f15945d1..000cdfc6334 100644
--- a/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/23_sph_neumann/check_value.cc
+++ b/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/23_sph_neumann/check_value.cc
@@ -68,7 +68,7 @@ template<typename Tp>
   void
   test001()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -121,7 +121,7 @@ template<typename Tp>
   void
   test002()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -174,7 +174,7 @@ template<typename Tp>
   void
   test003()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -227,7 +227,7 @@ template<typename Tp>
   void
   test004()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -280,7 +280,7 @@ template<typename Tp>
   void
   test005()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -333,7 +333,7 @@ template<typename Tp>
   void
   test006()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -386,7 +386,7 @@ template<typename Tp>
   void
   test007()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -439,7 +439,7 @@ template<typename Tp>
   void
   test008()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -493,7 +493,7 @@ template<typename Tp>
   void
   test009()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -546,7 +546,7 @@ template<typename Tp>
   void
   test010()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -599,7 +599,7 @@ template<typename Tp>
   void
   test011()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -652,7 +652,7 @@ template<typename Tp>
   void
   test012()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -705,7 +705,7 @@ template<typename Tp>
   void
   test013()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -758,7 +758,7 @@ template<typename Tp>
   void
   test014()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -811,7 +811,7 @@ template<typename Tp>
   void
   test015()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);
@@ -864,7 +864,7 @@ template<typename Tp>
   void
   test016()
   {
-    bool test [[gnu::unused]] = true;
+    bool test __attribute__((unused)) = true;
     const Tp eps = std::numeric_limits<Tp>::epsilon();
     Tp max_abs_diff = -Tp(1);
     Tp max_abs_frac = -Tp(1);